Why was OGDI created?

1
Why was OGDI created?

• Multiple geospatial data formats
• Important data integration / conversion cost
  (65 - 85 of the GIS implementation cost)
• Various projections
• Need for accessing data from a CD-ROM
• Need for accessing data from the Internet
• Reusable code for many applications

2
What does OGDI do?

• Direct and transparent access to local and
  networked geospatial datastores
• Multiple and simultaneous access to heterogeneous
  datastores
• Extraction of geometry and attributes
• Transparent and on-the-fly transformation of
• Projections
• Coordinates systems
• Hardware representation
• Runs under Win32 (Windows 95/NT) and Unix

3
Open Geospatial Datastore Interface

• T. Fisher

4
Who maintains OGDI?

• The Information Interoperability Institute
• members include (not exclusive)

• Intergraph
• ESRI Canada
• Global Geomatics
• CubeWerx
• CIRI
• NRCan
• National Defence
• GTIS

• SpatialWare
• Socomar
• Infomar
• IDON Corp
• Health Canada
• Navitrak Engineering
• and others

5
What implementations exist and what has made them
successful

• CubeSTOR from CubeWERX
• OGDI Servers and adapters from Global Geomatics
• Java OGDI from Global Geomatics
• JViews from ILOG
• SpatialFX from ObjectFX

6

• Lockheed Martin - Radar Simulation
• DND Research Establishment - various prototypes
• GEOMedia from Intergraph (Vector Formats)
• ARCView from ESRI (Raster formats)
• MARINET Project Multi-dimension OGDI

7
New or near Future Developments

• ARCView Vector formats
• ESRI Map Objects OLE-OGDI
• Integration of Remote Database Access based on
  SQL/MM
• Meta-data services

8
How does OGDI relate to OGC, TC211

• OGC- Submitted to Simple Feature Access Internet
  Thread
• Thread stopped
• OGDI moved to WWW working group
• ISO - Submitted as a reference platform
• ISO still in process of deciding what services are

9
How extensible is OGDI to additional data formats

• Approximately 25 drivers available commercially
• GRASS, DXF, DGN, DOQ, PAMAP, ARCInfo, SHAPE,
  MID/MIF, MrSID, CubeSTOR, etc...
• Public Domain or Govt owned drivers
• ADRG, CADRG, CIB, VRF/VPF, DTED, GRID, CEOS,
  NTDB/CCOGIF 3.0

10
How extensible is OGDI to other DCPs
(distributed computing platforms)

• The OGDI is written in ANSI C and in SUN JAVA
  making it very portable
• Can be wrapped into a CORBA or OLE environment
• Can also be adapted to map connect to a CORBA or
  OLE source as a driver

11
Applications
Access, Query and Update - in compliance with the
General Feature Model
ISO/TC211 Feature API
ISO
Simple Feature Data Access, OGC-RFP-1
OGC
OGC CORBA
OGC OLE/DB
Records
OGC SQL
Table, rows
ISO/TC211 WI 19 Services
12
Applications
ISO/TC211 Feature API
ISO
OGDI API
OGC CORBA
OGC
OGC OLE/DB
OGC SQL
OGDI integration into ISO